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Hole in the Sun's Corona


Published January 11, 2011


This Solar Dynamics Observatory image of the Sun taken on Jan. 10, 2011, in extreme ultraviolet light captures a dark coronal hole just about at Sun center. Coronal holes are areas of the Sun's surface that are the source of open magnetic field lines that head way out into space. They are also the source regions of the fast solar wind, which is characterized by a relatively steady speed of approximately 800 km/s. As the Sun continues to rotate, the high speed solar wind particles blowing from this hole will likely reach Earth in a few days and may spark some auroral activity. Credit: NASA/SDO/AIA


Mediatype image
Source http://www.nasa.gov/mission_pages/sdo/multimedia/gallery/corona-hole-20110111.html
Licenseurl http://www.nasaimages.org/Terms.html
Date 2011-01-11
Identifier 509532main_Cor_hole_nolabel
Addeddate 2012-01-26 19:19:19
Publicdate 2012-01-26 19:19:31


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